Introduction; Terminology - Garmin GTX 335 w GPS Installation Guidance

1.1 Introduction

Install the panel mount GTX 335 with GPS as a minor alteration in accordance with FAA Memorandum
Installation Approval for ADS-B OUT Systems or FAA Notice 8900.362 Policy for Installation of
ADS-B OUT Systems using the data in this installation guidance manual. Installation in accordance with
the FAA Policy Memo only pertains to the GTX 335 with GPS and limited interfaces contained herein.
This installation guidance is comprised of excerpts from the FAA approved GTX 3XX Part 23 AML STC.
If you choose to apply the STC to the aircraft or cover additional interfaces other than the data provided
herein, the panel mount GTX 335 with GPS must be installed in accordance with the complete version of
the Part 23 AML STC installation manual. The additional data must be requested through the Garmin
dealer supplying the equipment.
STC SA01714WI approves a Version 2 (RTCA DO-260B) ADS-B Out compliant solution, meeting
equipment requirements defined in 14 CFR 91.227, using GTX 335 transponders for the Part 23 aircraft
listed on the STC Approved Model List (AML).
Refer to the GTX 33X and GTX 3X5 ADS-B AML STC Equipment List for required hardware and
software configuration.

1.2 Terminology

ADS-B refers to Version 2 ADS-B Out.
References to metallic aircraft in this manual are those with an aluminum skin. Nonmetallic aircraft refers
to all other aircraft (e.g., wooden aircraft, aircraft with composite skin, or aircraft with tube and fabric
construction).
The term squitter refers to a broadcast of aircraft-tracking data that is transmitted periodically by a Mode S
transponder without interrogation from a controller's radar.
Installation Guidance Abbreviations
AC Advisory Circular
ADC Air Data Computer
ADLP Airborne Data Link Processor
ADS-B Automatic Dependent Surveillance - Broadcast
AFM Airplane Flight Manual
AFMS Airplane Flight Manual Supplement
AHRS Attitude Heading Reference System
AML Approved Model List
ATC Air Traffic Control
ATCRBS Air Traffic Control Radar Beacon System
CFR Code of Federal Regulations
CSA Conflict Situational Awareness
EFIS Electronic Flight Instrument System
EGNOS European Geostationary Navigation Overlay Service
EGPWS Enhanced Ground-Proximity Warning System
ELA Electrical Load Analysis
ELT Emergency Locator Transmitter
EMC Electromagnetic Compatibility
190-00734-17
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GTX 335 w/GPS Installation Guidance
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